Cornelius callahan



(No Model.)

O. CALLAHAN.

GONG.

No. 448,008. Patented Mar. 10,1891.

CORNELIUS OALLAHAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CORNELIUS OALLAHAN COMPANY, OF SAME PLACE.

GONG.

. SPECIFICATION forming part of Letters Patent No. 448,008, dated March 10, 1891.

' Application filed October 9, 1890. Serial No. 367,522. (No del.)

To all whom it may concern:

- Beit'known that I, CORNELIUS CALLAHAN, of Boston, in the county of Suffolk'and-State of Massachusetts, have invented certain new and useful Improvements in Gongs, of which the following is a specification.

My invention relates to gongs, generally, and particularly to such contrivances as are adapted for use 011 cable and electric streetrailway cars, where it is expedient that the gong should be sounded by the action of the foot of the operator.

It is the object of my invention to provide a gong which shall be efficient in the performance of its functions to a maximum degree, and which shall be the minimum in the point of simplicity of construction, and which at the same time shall occupy but a comparatively small extent of room.

The invention consists of a gong provided with a spring-impelled striking-bar, having hearings in a bracket supported by the gong, and an elbow-lever fulcrumed in the bracket, one arm of the said elbow-lever being equipped with a dog or pawl arranged to engage an offset or notch in the striking-bar, so that when the other arm of the lever is actuated by the foot of the operator the striking-bar may be drawn back against the tension of its spring and be released, when the spring will impel it forward and strike or sound the gong, a spring or springs returning the elbow-lever and its dog to position, so that the latter will again engage the spring-bar, all as I will now proceed to fully describe and claim.

Reference is to be had to the annexed drawings, and to the letters of reference marked thereon,forming a part of this specification, the same letters designating the same parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 is a vertical central sectional view of my invention, showing the parts in normal position. Fig. 2 is a View similar to Fig. 1, showing the position of the parts at the instant the striking-bar has been released from engagement with the dog after having been drawn back and before being impelled forward by its actuating-spring. Fig. 3 is a top plan view, on a reduced scale,

of the bracket 0, so that of the bracket for supporting the actuating Iparts.

In the drawings, a designates the gong, connected with which, at a central point, is a standard I), supporting a bracket 0, which may or may not be an integral part of the standard. (Z is the striking-bar, supported in bearings tudinally therein.

6 designates a spiral spring surrounding a portion of the striking-bar, and bearing at one end against a pin f, or otherwise suitably connected with the striking-bar, and at its other end resting against the side of one of the bearings g of said bar, so as to operate with a tendency of impelling the striking end h of the bar forward, so that it will strike or sound the gong a.

t represents a rubber spring secured upon what may be termed the outer end of the striking-bar d, and maintained in such position thereon by nuts j as to tend to hold the striking end 72' of the bar just out of contact with the gong when the partsare in their normal position, the said rubber spring 6 being arranged to bear against the outer face of the rearward bearing 7t of the striking-bar.

Z designates an upright 0r stud connecting with or forming an integral part of the bracket 0, which upright is slotted and has an elbowlever on fulcrumed therein,as at n. The upper or horizontal arm of the said elbow-lever is flattened so as to render it convenient to have the foot of the operator placed thereon to depress the same. The vertical or downwardly-extending arm of the elbow-lever is provided on its lower end with a pivoted pawl or dog 0, adapted when the striking-bar is in its normal position, as represented in Fig. 1,

to engage anoffset or notch 13 formed in the striking-bar, a spring (1 operating to press the free end of the pawl down into engagement with said offset.

r designates a spring arranged to operate against the downwardly-extending arm of the elbow-lever and move the same toward the end 7L of the strikingbar, and so cause the dog 0 to engage therewith, as before explained.

The operation of my invention is as follows:

itmay move longi- The parts being in their normal position, as represented in Fig. 1 and it being desired to sound the gong, the operator may press his foot upon the outer ends of the horizontal arm of the elbow-lever and depress the same, the effect of which will be to move the striking-bar in the direction indicated by the arrow in Fig. 2, until it arrives at the position indicated in Fig. 2, when the free end of the dog 0 will escape from the notch or oil'set-p of the striking-bar and allow the spring e to impel the same in the direction of the arrow in Fig. l, and so strike or sound the gong, the rubber spring 2' serving to draw the striking-bar back from contact with the gong the instant after the latter has been struck by the bar, the momentum of the said bar, induced by the spring 6, being sufficient to overcome the spring ito the extent of allowing it to strike or sound the gong.

Ears if, provided with holes 20, may be formed on the upper outer edges of the bracket 0 to enable the latter to be attached to the floor or other suitable part of the ear.

By the means described it Will be seen that a highly efficient and at the same time quite simple and economical gong for street-car service is provided.

It is obvious that changes may be made ill the form and arrangement of parts comprising my invention without departing from the nature or spirit thereof.

Having thus explained the nature of my improvements and described a way of constructing and using the same, I declare that what I claim is y In a gong. the combination of a bracket for supporting the gong, a spring-impelled striking-bar having bearings in the bracket, 

